TY - CHAP
T1 - Observer Reliability and Agreement
AU - de Vet, H.
PY - 2006/1/1
Y1 - 2006/1/1
N2 - The terms observer reliability and observer agreement represent different concepts. Reliability coefficients express the ability to differentiate between subjects. Agreement parameters determine whether the same value is achieved if a measurement is repeated. Parameters for reliability are ICCs for measurements on an interval scale. Parameters for agreement are kappa for measurements on a nominal scale, weighted kappa for an ordinal scale, and levels of agreement for measurements on an interval scale. Assessing observer reliability and agreement is essential for the interpretation of clinical observations in research and medical practice. Moreover, only if the sources of measurement errors are known, can they be anticipated, thereby improving the quality of measurements.
AB - The terms observer reliability and observer agreement represent different concepts. Reliability coefficients express the ability to differentiate between subjects. Agreement parameters determine whether the same value is achieved if a measurement is repeated. Parameters for reliability are ICCs for measurements on an interval scale. Parameters for agreement are kappa for measurements on a nominal scale, weighted kappa for an ordinal scale, and levels of agreement for measurements on an interval scale. Assessing observer reliability and agreement is essential for the interpretation of clinical observations in research and medical practice. Moreover, only if the sources of measurement errors are known, can they be anticipated, thereby improving the quality of measurements.
UR - https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=105023019787&origin=inward
U2 - 10.1002/0470011815.b2a04033
DO - 10.1002/0470011815.b2a04033
M3 - Chapter
SN - 9780470849071
T3 - Encyclopedia of Biostatistics: Armitage Enc Biostats 2e
SP - 1
EP - 5
BT - Encyclopedia of Biostatistics: Armitage Enc Biostats 2e
PB - Wiley
ER -